This patch add project inode identifier. Project ID may be used as
auxiliary owner specifier in addition to standard uid/gid.
Signed-off-by: Dmitry Monakhov <dmonakhov@xxxxxxxxxx>
---
fs/Kconfig | 7 +++++++
include/linux/fs.h | 4 ++++
include/linux/xattr.h | 3 +++
3 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/fs/Kconfig b/fs/Kconfig
index 5f85b59..23957c0 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -54,6 +54,13 @@ config FILE_LOCKING
This option enables standard file locking support, required
for filesystems like NFS and for the flock() system
call. Disabling this option saves about 11k.
+config PROJECT_ID
+ bool "Enable project inode identifier"
+ default y
+ help
+ This option enables project inode identifier. Project ID
+ may be used as auxiliary owner specifier in addition to
+ standard uid/gid.
source "fs/notify/Kconfig"
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 30eee24..0218906 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -753,6 +753,10 @@ struct inode {
#ifdef CONFIG_QUOTA
struct dquot *i_dquot[MAXQUOTAS];
#endif
+#ifdef CONFIG_PROJECT_ID
+ /* Project id, protected by i_mutex similar to i_uid/i_gid */
+ __u32 i_prjid;
+#endif
struct list_head i_devices;
union {
struct pipe_inode_info *i_pipe;
diff --git a/include/linux/xattr.h b/include/linux/xattr.h
index fb9b7e6..9d85a4b 100644
--- a/include/linux/xattr.h
+++ b/include/linux/xattr.h
@@ -33,6 +33,9 @@
#define XATTR_USER_PREFIX "user."
#define XATTR_USER_PREFIX_LEN (sizeof (XATTR_USER_PREFIX) - 1)
+#define XATTR_PRJID "system.project_id"
+#define XATTR_PRJID_LEN (sizeof (XATTR_PRJID))
+
struct inode;
struct dentry;
--
1.6.6
--
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